What is AUTH_ID and AUTH_USER in pl/sql ?
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check whether all the emp numbers are indeed unique.
SELECT flavor, SUM (ice_cream_sales) FROM sales_detail GROUP BY flavor ORDER BY 2 DESC If the "sales_detail" table contains ten records with different values in the flavor column (two "vanilla," three "chocolate," four "strawberry," and one NULL), how many rows are returned by the sample code above? 1. 0 rows 2. 1 row 3. 3 rows 4. 4 rows 5. 10 rows
Are subqueries faster than joins?
what is meant by nl2br()? : Sql dba
How many types of normalization are there?
Authentication mechanisms in Sql Server ?
What is the purpose of my sql?
What does the base_object_type column shows in the user.triggers data dictionary view?
difference between anonymous blocks and sub-programs.
Is like operator in sql case sensitive?
what is a materialized view? : Sql dba
Explain the difference between rename and alias?
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